回调方法

weixin_30652491

于 2012-02-16 08:55:00 发布

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原文链接：http://www.cnblogs.com/perock/archive/2012/02/16/2353539.html

Call-back methods

Sometimes it is useful to call methods on the parent/caller of your class.

If you are using the runbase framework you can call accessors methods from the form that called your run method to initialize a new object.

public static void main(Args _args)
{
    str callerName;  ;
    if(_args.caller() != null)
    {
        callerName = _args.caller().name();   if(_args.dataset() == tableNum(BankAccountTrans) &&
            formHasMethod(_args.caller(), identifierStr(bankAccountStatement)))//check the form for an accessor method for the statement
        {
            statement = _args.caller().bankAccountStatement();//get the bankStatment from the accessor method 
            engine = new BankRecEngine(_args,_args.record(), statement.AccountId);//create a new runbase, fill params from the form calling this runbase   if(engine.prompt())//ask the user for information
            {
                engine.run();
            }
       }   }
}